package com.dominator.utils.ocr;

import java.io.*;

/**
     * 文件读取工具类
     */
    public class FileUtil {

        /**
         * 读取文件内容,作为字符串返回
         */
        public static String readFileAsString(String filePath) throws IOException {
            File file = new File(filePath);
            if (!file.exists()) {
                throw new FileNotFoundException(filePath);
            }

            if (file.length() > 1024 * 1024 * 1024) {
                throw new IOException("File is too large");
            }

            StringBuilder sb = new StringBuilder((int) (file.length()));
            // 创建字节输入流  
            FileInputStream fis = new FileInputStream(filePath);
            // 创建一个长度为10240的Buffer
            byte[] bbuf = new byte[10240];
            // 用于保存实际读取的字节数  
            int hasRead = 0;
            while ( (hasRead = fis.read(bbuf)) > 0 ) {
                sb.append(new String(bbuf, 0, hasRead));
            }
            fis.close();
            return sb.toString();
        }

        /**
         * 根据文件路径读取byte[] 数组
         */
        public static byte[] readFileByBytes(String filePath) throws IOException {
            File file = new File(filePath);
            if (!file.exists()) {
                throw new FileNotFoundException(filePath);
            } else {
                ByteArrayOutputStream bos = new ByteArrayOutputStream((int) file.length());
                BufferedInputStream in = null;

                try {
                    in = new BufferedInputStream(new FileInputStream(file));
                    short bufSize = 1024;
                    byte[] buffer = new byte[bufSize];
                    int len1;
                    while (-1 != (len1 = in.read(buffer, 0, bufSize))) {
                        bos.write(buffer, 0, len1);
                    }

                    byte[] var7 = bos.toByteArray();
                    return var7;
                } finally {
                    try {
                        if (in != null) {
                            in.close();
                        }
                    } catch (IOException var14) {
                        var14.printStackTrace();
                    }

                    bos.close();
                }
            }
        }
    }